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From "Eric Yang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-8839) Define a protocol exchange between websocket client and server for interactive shell
Date Mon, 01 Oct 2018 23:16:01 GMT
Eric Yang created YARN-8839:
-------------------------------

             Summary: Define a protocol exchange between websocket client and server for interactive
shell
                 Key: YARN-8839
                 URL: https://issues.apache.org/jira/browse/YARN-8839
             Project: Hadoop YARN
          Issue Type: Sub-task
          Components: nodemanager
            Reporter: Eric Yang


Running interactive shell is more than piping stdio from docker exec through a web socket.
 For enabling terminal based program to run, there are certain functions that work outside
of stdio streams to the destination program.  A couple known functions to improve terminal
usability:

# Resize terminal columns and rows
# Set title of the window
# Upload files via zmodem protocol
# Set terminal type
# Heartbeat (poll server side for more data)
# Send keystroke payload to server side

If we want to be on parity with commonly supported ssh terminal functions, we need to develop
a set of protocols between websocket client and server.  Client and server intercept the messages
to enable functions that are normally outside of the stdio streams.



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